Skiving-machine.



r F. W. MERRICK.

SKIVING MACHINE.v

APPLICATION FILED FEB. 14, 1917,

Patented June 4, 1918.

6 SHEETS-SHEET 1.

[r2 ven to)" llllllxrrv i I I).

L fl Witness Ffw. MERRICK. SKIVING MACHINE.

APPLICATION FILED FEB-14,1917.

1,26,?5 l u Patented June 4, 1918.

6 SHEETS-SHEET 2.

F. W. MERRICK.

SKIVING MACHINE.

APPLICATION FILED FEB. 14. 1917.

Patented June 4, 1918.

6 SHEETSSHEET 3.

MOZIUZQ/ F. W. MERRICK.

SKIVING MACHINE.

APPLICATION FILED FEB. 14, 1917.

Patented J 11119 4, 1918.

a SHEET S SHEET 4.

F. W. MERRICK.

SKIVING MACHINE.

APPLICATION FILED FEB. 14, 1917.

Patented June 4, 1918.

6 SHEETS-SHEET 5- 4 3 l w w mum M a K h a. 0 mm M 0 no m a? 6% we w i w0 6 70 an a d 54 w 3 W 1 4 F. W. MERRICK.

I SKlVlNG MACHINE.

APPLICATION FILED FEB. 14, 1917.

Patented June 4, 1918.

6 SHEETS-SHEET 6.

jay/4 I 1575097230? Witness JMWJQ WY K 21 A ,I 29 @m. .ghgbcdlx .i' itFEANTQW. MEEBlGK OEBOST QN, MASSACHUSETTS, assre voa 'ro AMERICAN STAYcompan or os'ronr, MassacHUsnrrs, .aconrona'rron or MASSACHUSETTS.

To cill ehom it may concern: i s

Be it known that 1 I, FRANK Mission, a citizen of the. United States,residingat.

Boston, in the county of Suffolk, State of Massachusetts, have inventeda certain new and useful "Improvement in SlClV1IlgMa' chines, of whichthefollowing isaspecifica tionyreference being had therein- -to the ac,-

companying drawings;

The invention has relation, more particu-.

larly, to skivin machines of the general class, comprising a rotary diskcutter and a moving surface which serves as abed for supportingthematerial operated upon while being skived or split in thickness. .Theinvention comprises improvements in sectional presser devicescooperating with the said cut- 1 ter and moving,surfacepalso in thecon-1 struction of the moving surface; and also-in the construction ofdisk cutters. Certain of the improved features of the presser devices,

as well as the improved construction ofthe movin surface, are applicableto. machines employing other formsofcutters. i

Illustrative embodiments of the various. features of the invention itare illustrated in caseof that represented in Figs. 1 to 4 the Fig. 5,Sheet 4-, is a side elevation of one.

of the pressers of theisaid machine, shown detached. H 4 a M Fig. 6 isan edge view of the presser shown in Fig. 5. i

Fig. 7 1s a sldeview of a shown detached. 1

presser-support,

Fig. 8 is anedge view ofthe presser-support shown in Fig. 7.

Fig. 9, Sheet 5, is a partly sectional side VIGW showingmore"particularlywthe- -im-va provements in connection with the rotarycutter and the moving feeding and supporta 1 i r a 1 apron ingbeingadvanced or fed to the action ing surface. r

omitted., I

an end elevation of the sxivrne ivuicnmn.

Specification of Letters Patent. Patented nine 4;, 1918, ApplicationfiledFebruary 14, 1917. Serial No. 148,584.

the supporting cylinders of the endless feed mg and supporting surfaceof Fig. 9.

Fig. 12 is a plan view of the supporting cylinder of Fig. 11. 1

Figs. 13 to 17 are views of the blocks of one ofthe pairs of blocks ofthe endless feeding and supporting surface of Fig. 9.

Fi 18is a partly sectional view of a grin er and the supporting meanstherefor.

Having reference to the drawings,

'A rotary disk cutter 1 isshown attached to the lower nd of an uprightshaft 2, which turns in a hearing or bearings with which a support 3upon the'machine framework is furnished. Provision is made as usual forrotating the said shaft and cutter, by means of a grooved band-pulley 1fixed upon the upper portion of shaft 2 and around which a driving-band5 passes.

The moving surface serving as a support for the material which is beingskived is shown as an endless belt or bed-apron that is mounted uponsupporting and actuating cylinders or drums. Two forms or constructionsof such parts are illustrated. In the endless belt or bed-apron ismarked 6, and the cylinders or drums are marked 7 ,7. This belt orbed-apron is a plainone of suitable material. Figs. 9 to 17 show a formor construction comprising abelt or bed-apron of sectional characterembodying certain improvements forming a part of the present invention,and described hereinafter.

The-disk cutter 1 is arranged so that its cutting edge rotates in aplane that is parallel or approximately parallel with the upturnedsurface of the upper run of the worksupporting belt or bcd'apron, and ata distance from such surface corresponding with the predeterminedthickness to which the strip of leather or othermaterial to be operatedupon is to be reduced. Adjustment 1. means of approved character forenabling the said distance to be varied at will, to pro vide for adesired different thickness, is ema ployedin connection with the diskcutter in practice. In operation, the strip restsupon the upturnedsurface of the belt or bedof the cutter by movement of the belt orbedapron, so that in passing the edge of the justment of the cuttervertically with relation to the said surface.

Figs. 2 and 3 show convenient means for" the actuation of theworli=feeding and sup 5 porting belt or bed-apron. Thus in .said viewsthe shaft 8 of one of the cylindeis'or drums7 isshownas having combinedthere with a loosepulley 9"receiving adriving band 10, the said pulleyhaving In onnection .1

therewith means, not necessary to be described in "detail,wherebythe-*operative is enabled t'o clutch' it to the said shaft whenit is desired that themed-apron should be 'ac' tuated, and t unclutch ittherefrom when it is desired that the movement"of' the bedw apron shouldstop.* Figs:-2 and 3 show,'-also, a brake wheel ll that is fixed uportheishaft' 8, and: a reacting brake-device 12 which "issuitablycombined with th'e' :dutchshippirig devices so as' to' beactuated in unison' withn the latter, in ol-"dber to providejforbringing the bed apro'n quickly toiw state of rest upon the unclutchingl bf the clutch-pulley. The clutch and brake deviees may be,"inpractice; 0f anyapprove'd"charactet adapted to the requirements of themachine;- i

The upper-run of the bed-apron 6 slides upon a supporting or backingtable '13, Figs. 1 and 4, located 'between'the twosupportitngt andactuating cylinders 7, for-thebedapron. This backing -tablesupp'orts-lor backs-up the said upper run opposite the acting portionsof the work pressers 14, 14, and the" working edge of the cutter 1 at'the place where the skiving action occurs.

The acting portions of the sectionalvvork pressers 14, 14, 01" press'erfingers as they may be termed also, are intended to bear" upon the workat 'p'ointsdn close proximity to the working edge of the cutter, asshow-n best inFigs; Sand 4, As indicated in Fig. 3, the series of actingportions isarranged to make contact with the'work on -a curveconcentricwithsaid edge. Thereby such series operates toh'old all'portions of'the"width of the strip of'mjaterial that is'being skived, with; uniformelfectiveness close to the curved cutting edge of" the cutter. Thisinsures uniformity in the thickness; etc, of?

madefor limiting the'approach offthe won engagingjportwns of i the 1wo1k-'pressers to ward the bed-apron. In the present instance,

6sstop screws 17; 17, are combined with the .mine thenposition assumedby the pressers upper portions or arms of the work-pressers, thesestop-screws being arranged to make contact with a stop bar -18 "upon'thehoi1sing' or head 19 of "the* p'r'e'sser-devi0es, to deterin the absenceof material to be skived. It is intendedthat in the said position ofthework pressers their acting portions shall clear therupperasurface of thebed-apron, so as to avoid wear of such surface. By adjustment of theStOp -iSF8WS,-1W6&IOfdJlIBiELClF inlg portionS of "the work-pressers imay be compensated form 1 Asia" convenient means off preventingacoidental loss :otadjust'mentof the stopscrews "17,- 17 the portion notcan presse'r or :presser-fingen 1 containing the? threaded hole i inrwhich itsf stopascrew works is 1 split lengthwise, as' at:i- 2 0,.at*right. angles to and crossing the saidzholegandia-crampe ing+screw21' is combinedhwith the-two parts at the splitso that bymeans of thescrew 21. the lsaidl parts may be sprung :relative to' each other;thereby cramping orbindingthe I stop screwi and keeping itfifromturningir- 'Provi'sionj -is I made ifOl adj ustment'of the f individualworkepressers to enable their acting portions, respectively, to bebrought into the required proximity to: the workingedge of thediskecutter'. In the present instance 1 they are mountediupon individual1 supports 22, 22, which are made properly adjustable-I In the presentinstance, also; the 'adjustaa bility otthe said-supports 22,- 22, ispro-; vided for by I mounting them: side I byside upon a "supporting;fired :23 iwhiclr is located in theupPer por tion; of the presser-xstandon head 19. The supporte -22, 22, eXten"d downward from rod 23: w 1Their lower ends; are slotted at 22 Figs *8, and i receive in theirslots, between theoppositefside portions of their:forkspreduced:portions 14 Figs; 5"

- presser stan'd or head 1-19. i With' each individual" sup'portoppositely-acting: :screws 1 24, 24, are combined in a manner to provido i 12'5" for positive adjustment o f such support in. both directions5 and -for locking the support inits adjusted position. c Thusyea'ch"support 1 has associated with it a f-pair of; the said i screws, onethereof engaging with a aojectiam ing the parts, makingrepairs, orthelike,

the ends of the supporting-rod 23 for the supports 22, 22, are seated inholes in the side-cheeks of the presser-frame or head 19, and at leastone of the said holes extends completely through the corresponding cheekas at the left lll'Flg'. 2, and asindicated in a Fig. 1, sothatthe saidsupporting-rod may be inserted into place by an endwise movernent intosaid hole, and may be withdrawn by a I'BVBISBGIlClWlSG movement. Aclamp- 1ng screw 25 serves as a means of keeping the supporting-rod inworking position, and

whenever necessary the said clamping screw maybe loosened to permit thewithdrawal of the rod.

The work pressers or presser-fingers are kept close togethergside byside, and in contactso that there. shall be noopenings or cracks betweentheir acting portions, by 'means of a screw 220 having its threaded stemfitted to a threaded hole tapped in the outer check of the presser-standor head, and bearing by its inner end against the outer side of theoutermost support 22.

Through the action of the said screw against the said support, allloosenessamong the series of supports is taken up and the differentsupports are kept close together, thereby keeping the acting portionsof-the workpressers or resser-fingers also in close contact with oneanother, as mentioned above.

My improvement in the construction of the cutter is presented in Figs.9and 10, in which the cutter is shown as'comprising a convenient carrieror body-portion 1 to which a narrow cutter-ring 1 is secured detachably.For the reception of the cutterring, the body-portion is rabbeted at theunder side of its margin, as shown in Fig. 9. The cutter-ring l?isseated in the rabbet and is held therein by means of clamping screws1, 1, that pass upward through holes in the cutter-ring, and alsothrough holes 1 l in the carrier or body-portion. The said clampingscrews have nuts 1", 1 engaged with their upper portions above thecarrier .or body portion. The heads of the said screws are counter-sunkin the cutterring, so that they doinot project below the latter. Theholes 1, l in the body-portion 1 are larger in diameter in diflerentdirections than the stems of the screws 1, 1, so that, even though thecircular form of the cutter-ring should change more or less during thehardening and tempering process,

the screws 1, 1?, after being passedrthrough successive blocks.

the holes in thecutter-ring may be passed through the holes 1 1 withoutinterference or binding against the edges of holes 1, 1% Consequentlythe nuts 1, 1", may be tightened so as to clamp the cutter-ringproperlyto the carrier orbody-portion 1 without the screw-stemsbeing caused toact against theYsaid edges so as to strain or distort the cutter-ring.The pockets 1, 1,

in the top side of the body-portion or-carrier, occupied by the nuts 1 1arelarger than :the nuts so. that the latter are free to shifttransversely tolconform to thepositions of the clamping screws.

Any departure of "the peripheral edgeof the cutter-ring from=a truecircular form may becorrected by grinding. When the said rlng has beenso far reduced in size as to render it unsuitable for use, it may beremoved and another one substituted in=its place. The cost of thecutter-rings is much less than that of the cutter-disks in general use.i v i A grindendisk 81 is shown in Fig. 1 working against the bevel ofthe cutting edge of the cutter-ring. This grinder-disk is attached tothe lower end of a spindle82 working in abearing 83 with which zit-support 84 is furnished. Spindle 82 may be held positively in contact withthe said bevel by proper adjustmentof the bearing83, or its spindle maybe. longitudinally movable in a bearing sleeve, 85, as in Fig. 18, andbe acted upon by an expandingspiral spring 86 tending to keep the actingface of the grinder-disk pressed against such bevel. Spring 86 is shownconfined between the upper end of spindle 82 and a cap 87 applied to theupper end of bearing sleeve 85. At 90 is an edge straightener orgrinder-disk working flatly against the under side of the cutter-ringand mounted upon the lower'end of a spindle 91 rotatably mounted in abearing in a support 92. An expandingspiral spring 93 confined betweenthe upper end of the bearing and a flange 94 on theupper end of spindle91 acts with a tendency to keep the disk 90 in contact with theunderside of the cutter-ring. r The feeding and supporting belt orbedapron6 in some cases is composed of blocks or bars linked together ina flexible series. Figs. 9, 10, and 13 to 17 illustrate improvements inbed-aprons thus composed. The bed-apron shown insuch views comprisesblocks 60, 60, having forwardly and rearwardly projecting-portions 6060*, Figs. 13, 15, with the forwardly projecting portions interlappedwith the rearwardly projecting ones, Fig. 10, so as to break thecontinuity of the transversely-extending joints between Thereby. abetter and more uniform supporting surface for the work is provided. Theblocksare connected means of pivotal "pins which occupy transverseholes60 60?, .Figs. 13 to 17, in" the forwardly and rrearwardlyprojecting portions of the blocks. The ends of these pivotalrpinscarryrolls"60 60 WhlCl'l are held in placeby means of flanged screw-s60, 60%The said rolls are received in notches 7 ,=7 ,in the flanges7 79, of thecylinders or drums 7 7 79, used with this construction of 1'0 belt orbed-apron. One of the said cylinders or 'drums is shown separately in:Figs. 11

1 and 12. 1 Fixed tracks P70, 70, located between the two: cylinders ordrums 7 7 receive the rolls as the successive blocks leave the forefmostcylinder :or drum in passing to the .otherithereof,*and therebysupportthe belt or bed-apronso as to preventsagging thereof at theworking'place of the work pressers andweutte'r. --The blocks are fittedclosely and 2c carefully together at their front :and 1 rear wedges.Thus, the projecting portions 60 60?, have vertically convex edges which1 are concentric With the adjacent transverse holes 60!,1'60; through 1the blocks, 1 and the body- "portions of the blocks have concave redgeswhich likewise are concentric withthe said transverse holes. Thesaid'convezr edges and concave edges fit snugly against each otherwhenbroughtitogether. To facilitate the 30 making of. the blocks, eachisrof a transverse uneasurement corresponding with one-half -the1widthof the: beltwor bed apronpand two block: are placed sideby side in eachportionorsection of the belt or bedeapron to l= form in' effect onetransverse bar thereof, as

4'0 fof beingsassembledin= the belt or bedapron,

wvith forwardly projecting :portions 1 of 1 the 5 two blocks brought'together 1 at the middle *of the width 10f the belt "or bed-apron, sothat. they may 1be entered between the sepa- 1 4:5 frated rearwardly:projecting portions of the 1 preceding pair of blocks.

The supporting cylindersv or drums 7, 7, 01 -17 17?, .i for thework-xfeeding and supporting belt or bed-apron 6, are mounted upon amamemnd orrcarriage 1 00, which'also carries the supportingsor backingtable. 13, or P-tnacks :70, for 1 the 'said 'belt or bed-apron, -a11 dthe stand or head 19 ofthekpresser de- *vi'c'es. The foot of this' stand100 i is fitted betweenwguides 101,: 101, on the main bed -or platform102' of'the machine, and is adapted to slide; between: such guides i111the direc- "t'ionif rom front to reanandviceversa. An adjusting screw:103 [having :a knurled 'thuamb wheel isv providedwfor convenience inlectively toward and from the axis of the ofl a thinner chip or 1shaving.

the stem of whichoccupies iar-slot 196 in-the said :foot. Thewslot'"permits' the housing, lstand,"or head 19 to be slidrbackward or fora acomparatively 1 thick chip or shaving, the

distance of the said: acting portions from the said edge shouldbe-suflicient to obviate tendency of the chip or shaving to lifttheworkpressers and thereby interfere with theirv function of holding:the stock .111 close contact-with the belt'orbed-apron; Such distance'must i be greater than when operating upon 1 stock of rless stiffness,or when ataking 1 Adjustment of the supports of the workpressers*orpresser-devices bodily closer- 1 to or farther fromtheupturneclsurface ofrthe work-supporting and feedin belt-or bedapron is ipIOVlClBdfor by .nia ring the l housing,-'stand, or head 19 of the said devicesvertically adjustable with relation to thesai'd surface. 1 Inthisinstance, the said housing, "stand, or head is mounted upon 1 thetop of a bracket.1-91,.which latter in turn is mounted upon the mainstand 100 with capacity for being set: higher 'or lower thereon. Thus, adownwardlyextending portion or lug of the bracket191is engaged by aclampinglbolt 1 92 which :binds the said bracket in place upon the main1 stand, and which passes through 1 a vertical slot 193i in'the said;portionor lug, The said slotprovides for the 1 desired adjustmentofthebracket aird housing, stand, 'orhead vertically. Independentadjustment of the said housingystand, or head relative to the mainstand,toward and from the axis of'the disk-cutter is provided for by making 5the former adjustable upon the top of thebracketlQl: Inthis instance,

the innerfcheekxor side-piece of therhou'sing,

stand, or head 19 rests' by meansof aifoot 19. 1 upon the said top, andis 11 clamped-to the latter by means of a boltl95,Figs.' 2 and 3,

Ward upon"thebracket topafter the bolt has been loosened. .Thehousing,tstand, or head is positioned transversely :and prevented "fromangular cdisplacement by meansof' a 'gui'de rib 1 97 :rising above the'bracketFtOp -and receivedvwithin agroove in the under side "of thefoot.

' On its' 'way to the belt or bed apron; the strip whichiis being:operated uponrests :upon the curved upper surface of: a guidebar 1200,:iand is confinedi'tnansversely "by means of edge-guides1201, 201, which"are lfastened to thez said guidebarflby means :of "13 0 clamping screws202, 202. :Thestems of said screws occupy slots203,,203,in the feet. of

said edge-guides -such slots providing for lateral adjustment of theedge-guides The guide bar is attached to the vertical portion of bracket191 by means of a screw 204.

The supporting and backing table 13 for the belt orbedapron is madeadustalole vertically, in order to enable. it t be placed where neededto support the upper run of saidbelt or bed-apron properly lin therequiredrelation to other parts. To this end a it is furnishedwith adownwardly extend-- stand.

I claim as my invention:

1.;The combination comprising a moving material-supporting surface, adisk-cutter acting in a plane adjacent the said surface upon a portionof the material which is supported by thef-moving surface, and a seriesof work pressers making contact with the surface of the work on a curveconcentric withv the edge of the disk cutter and close to such edge. i

2. The combination comprising a disk cutter, a movingmaterial-supporting surface, a series of work-pressers making. contactwith the surface of the work on a curve concentric with the edgeof thedisk cutter andclose to such edge, and means for adjusting the pressersindividually to vary their distance fromthe axis of the, diskcutter.

3."The combination comprising a disk cut a ter, material-feeding 5means, a series of -=individually to vary their distance from the jwork-pressers making .contactiwith the surface of thework on a curveconcentric with the edge of the disk cutter and close to such edge, andmeans foradjustingthe pressers axis of the disk cutters V a 54; Thecombination comprising a disk cutter, material feeding means, a seriesof work-pressers. making contact with the surface of the work on a curveconcentric with a I work-pressers, in a dlrection parallel with the edgeof the diskcutter and close to such spectivework-pressers. a a

.5. The com'blnation compris ng acutter,

material-feeding means,a series of workedge, and individual supportsforthe reing the. respective supports in a direction parallel with theplane of the cutter-edge to regulate the closeness of the work-pressersto the said edge.

7. The combination comprising a cutter, material-feeding means, a.series of springactuated work-pressers makingcontact with the surface ofthe work adjacent theedge of the cutter, individual supports for therespective work-pressers, and adjustmentmeans for adjusting therespective supports in a direction parallel with the plane of thecutter-edge to regulate the closeness of the work-pressers to the saidedge.

8. The combination comprising a disk cutter, material-feeding means,aseries of work-A pressers making contact with the surface of l the workon a curve concentric with the edge of the disk cutter and close to suchedge, individual supports for the respective workpressers, andadjustment-means for the said supports to vary the distance of therespective work-pressers from the axis of the disk cutter.

9. The combination comprising a disk cutter, material-feeding means, aseries of individual Workresser supports, and a series ofspring-actuated Work-pressers mounted upon the said supports and makingcontact with the work adjacent the edge of the disk cutter. j

10., The combination comprising a disk cutter, material-feeding means, aseries of individual work-presser supports, a series of spring-actuatedWork-pressers mounted upon the said supports and making contact with theWork adjacent the edge of the disk cutter,v andadjustmentrmeans for thesaid supports to vary the distance of the respective work-pressersfromithe axis of the disk cutter. 1 A i i 1 11. The combinationcomprising a cutter, material-feeding means, a series of workpressersmaking contact with the surface of the work adjacentthe edge of thecutter, individual pivotally-mounted supports for said work-pressers andadjustmentmeans for adjusting the respective supports and the plane ofthe cutter-edge.

-12.The 1combination comprising a cutter,

material-feeding means, a series of workpressers making contact with thesurface of the work adjacent, the edge of the cutter, individualsupports for said work-pressers, and oppositely-acting adjustment-screwsfor adjusting the supports and work-pressers positively toward and fromthe edge of the cutter. a i i v 13. The combination comprising a cutter,material-feeding means, a series of workpressers making contact with thesurface of the work adjacent the edge of the cutter, individualpivotally-mounted supports for said work-pressers, and oppositely-actingadjustment-screws for adjusting the supports and Work-.presserspositively toward and from the edge of the cutter.

14:. The combination comprising a cutter, material-feeding means, aseries of Workpressers making contact With the-surface of the Workadjacent .the edge-of the cutter, individual supports vfor saidWork-pressers, and a removable pivotal mounting for the plurality 01":supports.

15. The combination comprisinglaacutter, material-feeding means, aseries of Workpressers making contact with the surface of the Workadjacent 'thei'edgerofathe cutter, individual supports for'saidwork-vpressers, and a detachable supporting head @or stand "for saidsupports.

16. The combination comprisingm cutter,

material-feeding means, a series of work pressers makingcontact with the-'surface of the Work adjacent the edge of the cutter,

individual supports for said 'Work-pressers,

and a supporting head or stand :for-saidsupports provided with means ofadjustment towardvand from the edge of the cutter.

17. The combination comprising a cutter,

a moving material-supporting surface, 1 a series of pivotally-mountedsprin'g actuated Work-pressers making contact with the surface of theWork close to thei'edge of thecutter, and means for adjusting thepressers close to such edge, and means for adjusting the pressersindividually to vary their distance from the axis of the disk-cutter.

19 The combination comprising a cutter,

material-feeding means, a series ofspri'ng actuated worlspi'essersmaking contact with the WOI'k adj acent the edge of the cutter, in-

dividual supports on which the respective Work-pressers are pivotallymounted, and means for adjusting said supports in a direction parallelwith the plane of the cutteredge to locate the pressers at the desireddistance relative to the said edge.

20. The combination comprising a cutter, material-ieeding means, aseries of springactuated Work-pressers making contact with the Workadjacent the edge of the cutter,

Copies 0f this patent may be obtained for five cents each, by addressingthe Commissioner of Patents;

unease 1:

individual tpivotallye'mounted wsupports "on the -Workpressers are;pivotally mounted, :and means for adjusting the said Which supports 'inadirection parallel with the plane of the cutter-edge to regulate theclose.

ness of the Work-pressers to vthe edge of the cutter. M i

121. The'combination comprisinga cutter,

material-feeding means, a seriesof pivotally 22. The combinationcomprising a mutter, materlal-feedmg means, a series-of spring-1actuated Work-pressers making contact Withthe Work adjacent the edge ofthe CHlZtGLfl series of individual :pivotally mounted:supports onwhic'hlthe WOIElC-TPIGSSBI'S are pivotally mounted, and means foradjustingzthe series of supports ibodily "vertically rrelative Thecombination compmsing a -'cutter,;

to the plane of the vvork.- I

spning? actuated pivotally mounted rvvork= pressers havingsplitportions, adjustable StOPrSCI'GlVS applied to: said "split portions, andcramping-screws also applied to such split: portions 2. The combinationcomprising a rotary cutter-body having holes "exceeding ein adi-Q ameterindifferent dlreetionsthe diameters of the secuningi-screws .orbolts-ltowpermit the latter to assume their town positions in suchholes, a cutter-ring having iholesi occupiecl by such screws :or bolts,and the :said is'ecuring screws or bolts, :oecupying the :holes, and

fastening the cutter ring. .to the icuttere'bodyn 25; The combinationcomprising va -cutter, and a traveling cuttingebed paralleling the planein Whiohthe cutter operaltes, fee'dingl the Work to the action of thecutter and sup ponting it While beingacted upon; and com prising abed-apron composedpibroadsura faced blocks flexibly wli'nked togethenandhaving portions interlapping With: i one an:

other the direction cat the length ofivthe broken and with theprojecting portions of; i said blockse-iiormedwithconvert edges Workbed-apron whereby: the transverse joints are:

ing in concavities in the opposingedges.

In testimony whereof I aflix' mymsign'ature WashingtomD. 0.

